There was a thread about making a purl stitch on the front and end of each row so that you can sew the pieces together more easily. Do you do this on the sides of the sweater back, front, shoulders, and sleeves? Do you just add 2 extra stitches when you are casting on? I am about to knit a sweater and when I knitted a mitten, I ran into the problem of the rolled edge where I needed to join the mitten to the other side. I don't want to have this trouble on a sweater.